JP6966823B1 - Wave-dissipating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wave-dissipating device capable of reducing deterioration and improving recyclability. A floating type wave-dissipating device 1 in which a plurality of wave-dissipating bodies 10 having a buoyant body 11 are connected by a connecting portion 30, the wave-dissipating body 10, a guard rail portion 20, and a connecting portion 30. The wave-dissipating body 10 and the connecting part 30 are made of an FRP material, and the wave-dissipating body 10 is an integrated box that opens in the bottom direction and has a buoyant body 11 inside. Adopt the means of constructing the mold. A CFRP leaf spring structure may be adopted as the structure of the guardrail mounting portion in the guardrail portion 20 and the connection structure between the wave-dissipating main body 10 and the mooring portion 40. [Selection diagram] Fig. 1

Description

The present invention relates to a wave-dissipating device, and more particularly to a technique for reducing deterioration of the wave-dissipating device and improving recyclability.

Conventionally, a wave-dissipating device such as a boat racetrack is often composed of steel and a resin structure. Since it contains metal, it deteriorates quickly due to seawater. In addition, since a part of the wave-dissipating device is always under the surface of the water, aquatic organisms such as a wisteria jar often adhere to it.
When replacing the wave-dissipating device, it was necessary to separate the wave-dissipating device into a metal part and a resin part and remove the wisteria jar and the like for recycling.
In recent years, there is an increasing momentum that the amount of industrial waste treated should be reduced.
Therefore, there has been a demand for a structure that is less likely to be deteriorated by seawater or the like and is easy to recycle.

The present inventor has invented the technique described in Patent Document 1 for a wave-dissipating device in the past. Specifically, as shown in FIG. 6, in a wave-dissipating device 70 composed of a wave-dissipating body 71, a guardrail portion 72, and a mooring portion 73, a guardrail mounting plate is provided on the opposite side of the course to eliminate an acute triangle. A U-shaped steel connecting metal fitting for first connection and a U-shaped steel connecting metal fitting for second connection are provided on the wave main body 71, respectively, a metal square assembly metal fitting is provided on the lower surface of the acute triangle main body, and the lower ends are the lower ends of the assembly metal fittings. It is a wave-dissipating device having a cushioning function in a racecourse where a guardrail mounting plate having a guardrail pivotally attached to the steel is constantly urged in the course direction by a compression spring and a buoyancy adjusting unit is provided.

However, since the technique described in Patent Document 1 employs a structure including a metal structure, it is difficult to say that it is easy to recycle, and this problem cannot be solved.
Therefore, the present inventor pays attention to the fact that the conventional wave-dissipating device adopts a structure including a metal part, which causes rapid deterioration and is difficult to recycle, and cannot solve the problem caused by changing the material or structure. Based on the idea of a thing, we have developed a wave-dissipating device that can improve both product life and recyclability, and have come up with a proposal for a "wave-dissipating device" according to the present invention.

Japanese Patent No. 5376358

In view of the above problems, it is an object of the present invention to provide a wave-dissipating device capable of reducing deterioration and improving recyclability.

In order to solve the above problems, the wave-dissipating device according to the present invention is a floating type wave-dissipating device in which a plurality of wave-dissipating bodies having a buoyant body are connected by a connecting portion, and the wave-dissipating body and the guard rail portion are used. , The connecting part and the mooring part, the wave-dissipating body and the connecting part are made of FRP material, and the wave-dissipating body is an integrated box type that opens in the bottom direction and has a buoyant body inside. Is adopted.

Further, the present invention employs a means in which the guardrail mounting portion in the guardrail portion has a leaf spring structure made of CFRP.

Further, the present invention employs a means in which the wave-dissipating body and the mooring portion are connected via a leaf spring structure made of CFRP.

Further, the present invention employs a means in which the mooring portion holds the mooring pile with a three-point roller, and at least one roller is play-adjustable.

Furthermore, the present invention employs a means in which the mooring section is provided with a working float section.

Further, the present invention employs a means in which the cross-sectional area of the horizontal plane of the buoyancy body is larger in the area at the preliminary buoyancy position than the area at the waterline, and the preliminary buoyancy position is higher than the waterline.

According to the wave-dissipating device according to the present invention, by using a large amount of FRP material, deterioration due to seawater or the like is small, which contributes to an improvement in product life, and at the time of recycling, it is not necessary to separate resin and metal, and recyclability is achieved. In addition to contributing to the improvement of the workability, the weight of the whole and each part can be reduced, and the workability in the installation / removal work and the recycling work can be improved.

It is an overall perspective view which shows the embodiment of the wave-dissipating apparatus which concerns on this invention. It is a partial cross-sectional view which shows the embodiment of the wave-dissipating apparatus which concerns on this invention. It is explanatory drawing which shows the embodiment of the wave-dissipating apparatus which concerns on this invention (the explanation of the cushioning function). It is explanatory drawing which shows the embodiment of the wave-dissipating apparatus which concerns on this invention (the adjustment of a roller is explained). It is explanatory drawing which shows the embodiment of the wave-dissipating apparatus which concerns on this invention (the explanation of the buoyancy body). It is explanatory drawing which shows the conventional wave-dissipating apparatus.

The greatest feature of the wave-dissipating device according to the present invention is that deterioration is reduced and recyclability is improved by changing the material and structure.
Hereinafter, embodiments of the wave-dissipating device according to the present invention will be described with reference to the drawings.

The overall configuration and the configuration of each part of the wave-dissipating device according to the present invention are not limited to the embodiments described below, and can exhibit the same effects within the scope of the technical idea of the present invention. It can be changed as appropriate within the range of shape, dimensions, etc.

The present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is an overall perspective view of the present invention, in which a dashed line represents the water level. FIG. 2 is a partial cross-sectional view of the wave-dissipating device, showing a cross-sectional view of the wave-dissipating body 10, the guardrail portion 20, and the connecting portion 30. 3A and 3B are explanatory views of a shock absorber function of a wave-dissipating device, FIG. 3A is an explanation of a guardrail portion 20, and FIG. 3B is an explanation of a leaf spring portion 41. 4A and 4B are views for explaining the adjustment of the rollers, where FIG. 4A is an explanation at the time of adjustment when the mooring pile 60 is thick, and FIG. 4B is an explanation at the time of adjustment when the mooring pile 60 is thin. 5A and 5B are explanatory views of a buoyancy body, where FIG. 5A is an explanation when the water level is a waterline, and FIG. 5B is an explanation when the water level is a preliminary buoyancy position.

The wave-dissipating device 1 is a floating type wave-dissipating device, and more specifically, it is a wave-dissipating device in which the main constituent members are made of FRP material. By changing the main material and structural material from Fe to FRP, we are taking measures against seawater and reducing the weight.
The wave-dissipating device 1 is mainly composed of a wave-dissipating main body 10, a guardrail portion 20, a connecting portion 30, and a mooring portion 40 as one block, and a plurality of blocks are connected to each other. This will be described with reference to FIGS. 1 and 2.

The wave-dissipating main body 10 is a main body that reduces waves on the water surface. The shape is an elongated integrated box. In the past, the structure was such that a plurality of box types were fixed with connecting metal fittings, but by integrating them, the number of parts is greatly reduced and the cost is reduced.
Since it is an FRP material, the strength in the vertical, rotational, and front-back directions is increased, the length in the width direction is reduced, and the overall size and weight are reduced. Since the structure is capable of RTM molding, mass production by press molding is easy and the productivity is excellent.
The structure is such that the opening of the box is arranged toward the bottom and the energy of the waves entering the box is absorbed. Inside the wave-dissipating body 10, buoyant bodies 11 for floating the wave-dissipating body 10 are arranged on both sides in the horizontal width direction. By arranging it at this position, the wave-dissipating body 10 can be stably floated on the water surface. Further, as shown in FIG. 2, the vicinity of the bottom of the buoyant body 11 is stepped.

The plurality of wave-dissipating bodies 10 are connected in the longitudinal direction by the connecting portion 30 arranged above the wave-dissipating main body 10, and can extinguish a wave in a wide area. A guardrail portion 20 is further arranged on the upper part of the wave-dissipating main body 10.
The wave-dissipating body 10 is connected to the mooring portion 40 via the leaf spring portion 41. This is to moor the wave-dissipating device 1. The mooring unit 40 may be connected to all wave-dissipating bodies 10 or may be connected to wave-dissipating bodies 10 at regular intervals.
Further, it is preferable to apply an antifouling paint to the front surface and the back surface of the wave-dissipating body 10. Since the wave-dissipating body 10 has an integrated box-shaped structure, the antifouling paint can be easily applied to the back surface, the adhesion of aquatic organisms can be reduced, and the wave-dissipating effect can be prevented from being attenuated.

The guardrail portion 20 is a guard portion for suppressing contact and collision of the boat operator. The guardrail portion 20 includes a guardrail plate portion 21 and a guardrail holding portion 22.
The guardrail plate portion 21 is a portion that receives an impact, and has a strength that does not cause damage, bending, or the like due to the impact.
The guardrail holding portion 22 is for fixing the guardrail plate portion 21 to the wave-dissipating main body 10. The guardrail holding portion 22 is a leaf spring CFRP member, and can prevent strength deterioration due to corrosion as compared with steel materials, and can improve cushioning properties.
Further, by adopting the L-shaped structure, when the guardrail plate portion 21 is impacted, the L-shape bends, so that the effect of the damper can be further exhibited.
The guardrail plate portion 21 is fixed to the guardrail holding portion 22 by a screw portion 50.

The connecting portion 30 is for connecting a plurality of wave-dissipating bodies 10. The connecting portion 30 has a tubular structure made of FRP material. Two are arranged in the width direction of the wave-dissipating main body 10 so as to straddle the adjacent wave-dissipating main body 10.
In the connecting portion 30 on the guardrail side, the guardrail holding portion 22 and the wave-dissipating main body 10 are fastened together with the screw portion 50. The mooring side connecting portion 30 is fastened together with the guardrail holding portion 22 and the wave-dissipating main body 10, and is fixed by the screw portion 50 via the working float 42 and the leaf spring portion 41.
Since the conventional connecting portion uses a steel material, the strength deterioration occurs due to corrosion, but by using the FRP material, the strength deterioration can be prevented.

The mooring unit 40 is a portion for mooring the wave-dissipating device 1. The mooring portion 40 includes a leaf spring portion 41, a working float 42, and a mooring pile holding portion 43.
The leaf spring portion 41 has a buffer structure between the mooring portion 40 and the wave-dissipating main body 10, and the mooring portion 40 and the wave-dissipating main body 10 are obliquely fixed. The leaf spring portion 41 is made of CFRP material and can enhance the wave-dissipating and cushioning effects.
The work float 42 secures a space for stabilizing the mooring portion 40 from the water surface and for installing and maintaining the wave-dissipating device 1. The working float 42 is made of FRP material and has a structure having a hollow inside and having a buoyant force, and the upper part is a flat surface. It is also preferable that the working float 42 has a structure in which the buoyancy can be adjusted by, for example, water is taken in and out of the hollow inside as needed.
Since the work float 42 is arranged on the wave-dissipating body 10 side of the mooring portion 40, the work float 42 is strong and can be easily connected, and the water surface mooring connection work becomes easy.
It is also preferable to dispose a length adjusting mechanism at any of the front and rear positions of the working float 42, for example, between the working float 42 and the leaf spring portion 41 or the mooring pile holding portion 43. According to such an embodiment, the position of the wave-dissipating device 1 with respect to the mooring pile 60 can be easily adjusted. As for the specific structure of the length adjusting mechanism, it is sufficient to adopt conventional means.

The mooring pile holding portion 43 has a structure for fixing the wave-dissipating device 1 only in the horizontal direction to the mooring pile 60. When the water surface rises and falls due to the ebb and flow of the tide, the wave-dissipating device 1 moves up and down with respect to the mooring pile 60, but can maintain a horizontal position. When the wave-dissipating device 1 moves up and down with respect to the mooring pile 60, if the mooring pile 60 and the plate portion of the mooring portion 40 come into direct contact with each other, damage is caused by rubbing or the like. Therefore, three rollers 44 are arranged in the mooring pile holding portion 43, and the rollers 44 move while rotating with respect to the mooring pile 60, so that damage due to rubbing or the like is less likely to occur.
One of the three rollers 44 can change the distance to the mooring pile 60.

Next, the damper structure of the guardrail holding portion 22 and the leaf spring portion 41 will be described with reference to FIG.
FIG. 3A shows the guardrail portion 20. The impact can be reduced by bending the guardrail holding portion 22 to the right around the L-shaped bent portion of the guardrail holding portion 22 against the contact or collision of the boat operator from the left side of the paper. Generally, a damper structure using a spring structure is used, but by using the guardrail holding portion 22 as a CFRP material, it is possible to fulfill both the role as a mounting portion of the guardrail plate portion 21 and the role as a damper. can.

FIG. 3B shows the leaf spring portion 41. The leaf spring portion 41 is a portion that connects the wave-dissipating main body 10 and the working float 42 via the connecting portion 30. The leaf spring portion 41 is made of CFRP material and has a structure in which the connecting portion 30 and the leaf spring portion 41 are diagonally fixed as shown in the figure.
When the boat operator collides with the guardrail plate portion 21, a part of the impact spreads to the entire wave-dissipating body 10. By reducing the impact received by the wave-dissipating body 10 by the leaf spring portion 41, the amount of impact transmitted to the mooring portion 40 can be suppressed.
By forming the guardrail holding portion 22 and the leaf spring portion 41 in this structure, the structure of the wave-dissipating device 1 can be simplified and reduced in weight. Further, since the spring is generally made of metal, it is necessary to separate it at the time of recycling. However, in this embodiment, since the CFRP material is used, there is no need to separate the spring, and the recyclability is excellent.
Further, since the guardrail holding portion 22 and the leaf spring portion 41 can obtain a double cushioning effect against the contact or collision of the boat operator, life protection can be expected.

As described above, according to the present embodiment, by using a large amount of FRP material including CFRP material, deterioration due to seawater or the like is small, it is not necessary to separate resin and metal at the time of recycling, and it is lightweight and has elastic performance. Therefore, an excellent wave-dissipating device can be obtained.

Next, the structure of the mooring pile holding portion 43 will be described with reference to FIG. The mooring pile holding portion 43 has a structure for mooring the wave-dissipating device 1 to the mooring pile 60. Rollers are arranged to prevent the portion in contact with the mooring pile 60 from sliding and being damaged when the water surface changes up and down. Generally, four rollers are used. According to this aspect, since the mooring pile 60 can be supported from four directions, the mooring pile 60 can be stably held. However, if the pile diameters of the mooring piles 60 are different, the space between the mooring piles 60 and the rollers may be too wide or too narrow. In that case, it was necessary to adjust the positions of the four rollers, which was troublesome.
In the present embodiment, as shown in FIG. 4A, the mooring pile holding portion 43 holds the mooring pile 60 by three rollers 44. For example, as shown in (b), when the pile diameter of the mooring pile 60 is small, the roller 44 is moved to the mooring pile 60 side on the left side of the paper surface, so that the mooring pile 60 does not change the position of the other rollers. The amount of play between the roller 44 and the roller 44 can be adjusted and optimized.

As described above, according to the present embodiment, by adopting three roller structures and making it possible to adjust the position of one roller, it is possible to easily adjust the pile diameter and the amount of play, and the adjustment work at the time of installation can be performed. It can be made more efficient.

Next, the structure of the buoyant body 11 will be described with reference to FIG. The buoyant body 11 is for floating the wave-dissipating body 10 on the water surface. As shown in FIG. 5A, the wave-dissipating body 10 is arranged at both left and right ends in the width direction. W. which is the surface of the water. The volume of the buoyant body 11 located below the line L generates a force for floating the wave-dissipating body 10. The buoyancy body 11 has a stepped shape near the bottom, and has a structure in which the cross-sectional area is large at the preliminary buoyancy position above the bottom surface.
In (a), the waterline is W. It is a line of L. Therefore, at the start of use, the buoyant body 11 is in a position as shown in (a) with respect to the water surface.
When the wave-dissipating device 1 is continuously used, the shells 61 may gradually adhere to the wave-dissipating body 10. When the shells 61 are attached, the weight of the wave-dissipating body 10 increases, and the subduction of the wave-dissipating body 10 increases. Then, the original wave-dissipating ability cannot be exhibited.

Therefore, by increasing the cross-sectional area of the horizontal plane of the buoyancy body 11 at the preliminary buoyancy position, which is a position higher than the original waterline position, the buoyancy amount of the buoyancy body 11 is increased, and the wave-dissipating body 10 is submerged. Can be mitigated. FIG. 5B shows a state in which the shells 61 are attached, the weight of the wave-dissipating body 10 is increased, and the wave-dissipating body 10 is slightly subducted. W. Since L has reached the preliminary buoyancy position, the cross-sectional area of the horizontal plane of the buoyancy body 11 has increased and the buoyancy has increased, so that the subduction of the wave-dissipating body 10 can be reduced.

In this way, by making the buoyancy body 11 two stages of the water line and the preliminary buoyancy portion, it is possible to offset the subduction of the weight due to the adhesion of living organisms and maintain the normal position of the wave-dissipating body 10, and the wave-dissipating effect can be achieved. The decay can be stopped.

In addition, the wave-dissipating device according to the present embodiment can walk on the upper part of the wave-dissipating device by reducing the number of parts, simplifying maintenance and improving safety.
Further, since the wave-dissipating device according to the present embodiment can be connected in the same manner as the existing wave-dissipating device, the cost burden of the owner can be reduced.

The present invention realizes reduction of deterioration due to corrosion and the like and improvement of recyclability, and is considered to have great industrial applicability in the field of "wave-dissipating device".

1 Wave-dissipating device 10 Wave-dissipating body 11 Buoyant body 20 Guardrail part 21 Guardrail plate part 22 Guardrail holding part 30 Connecting part 40 Mooring part 41 Leaf spring part 42 Work float 43 Mooring pile holding part 44 Roller 50 Thread part 60 Mooring pile 61 Shells 70 Wave-dissipating device 71 Wave-dissipating body 72 Guardrail part 73 Mooring part

Claims (6)

It is a floating type wave-dissipating device in which a plurality of wave-dissipating bodies having a buoyant body are connected by a connecting portion.
It consists of a wave-dissipating body, a guardrail part, a connecting part, and a mooring part.
The wave-dissipating body and the connecting part are made of FRP material.
The wave-dissipating body is a wave-dissipating device characterized by being an integrated box type that opens toward the bottom and has a buoyant body inside. The wave-dissipating device according to claim 1, wherein the guardrail mounting portion in the guardrail portion has a leaf spring structure made of CFRP. The wave-dissipating device according to claim 1 or 2, wherein the wave-dissipating body and the mooring portion are connected via a leaf spring structure made of CFRP. The mooring portion according to any one of claims 1 to 3, wherein the mooring pile is held by three rollers, and at least one roller can be play-adjusted with the mooring pile. The described wave-dissipating device. The wave-dissipating device according to any one of claims 1 to 4, wherein the mooring section includes a working float section. Claims 1 to 5 are characterized in that the cross-sectional area of the horizontal plane of the buoyancy body is larger in the area at the preliminary buoyancy position than the area at the waterline, and the preliminary buoyancy position is at a position higher than the waterline. The wave-dissipating device according to any one of the above items.

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